CVE-2026-43620
5.5
MEDIUM
CVSS 3.1
EPSS 0.50%
描述
Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CF_INC_RECURSE in compatibility flags and sending a specially crafted file list where the first sorted entry is not the leading dot directory, followed by a transfer record with ndx=0 and an iflag word without ITEM_TRANSFER, causing the receiver to read 8 bytes before the allocated pointer array and dereference an invalid pointer at an unmapped address, resulting in a deterministic SIGSEGV crash of the rsync client.
如何修補 CVE-2026-43620
要修補 CVE-2026-43620,請將受影響套件升級到下列已修補版本。
- —升級至 3.4.3-r0 或更新版本
- —升級至 3.2.3-4+deb11u4 或更新版本
CVE-2026-43620 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 3.4.3-r0
- from 0, < 3.2.3-4+deb11u4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |